A return-mapping algorithm for plastic-damage models: 3-D and plane stress formulation

Three-dimensional and plane stress formulations of the return-mapping algorithm for a class of plastic-damage models are derived using the spectral decomposition form of the stress. An e cient plane stress computation scheme based on the spectral return-mapping algorithm is developed. The consistent algorithmic tangent sti ness for the present algorithm is formulated. The validation and performance of the present return-mapping algorithm is demonstrated by numerical examples